diff --git a/bin/mqtt5_canary/main.cpp b/bin/mqtt5_canary/main.cpp
index b643b288e..7f5332916 100644
--- a/bin/mqtt5_canary/main.cpp
+++ b/bin/mqtt5_canary/main.cpp
@@ -676,7 +676,6 @@ int main(int argc, char **argv)
 
     ApiHandle apiHandle(allocator);
     struct AppCtx appCtx = {};
-    AWS_ZERO_STRUCT(appCtx);
     appCtx.allocator = allocator;
     aws_mutex_init(&appCtx.lock);
     appCtx.port = 1883;